/Engine/Source/Editor/MovieSceneTools/Public/MovieSceneToolsUserSettings.h
class UMovieSceneUserThumbnailSettings : public [UObject](API\Runtime\CoreUObject\UObject\UObject)
bool
bDrawSingleThumbnails
Whether to draw a single thumbnail for this section or as many as can fit
bool
bDrawThumbnails
Whether to draw thumbnails or not
EThumbnailQuali...
Quality
Quality to render the thumbnails with
FIntPoint
ThumbnailSize
Size at which to draw thumbnails on thumbnail sections
FSceneViewState...
ViewState
Temporal history for the view required for advanced features(e.g., eye adaptation) on all thumbnails